If i may, you can use the command line option "-mat_mumps_icntl_4 2"
MUMPS then gives infomations about the factorization step, such as the
estimated needed memory.
Best regards,
Yann
Le 5/23/2023 à 11:59 AM, Matthew Knepley a écrit :
On Mon, May 22, 2023 at 10:42 PM Zongze Yang <[email protected]
<mailto:[email protected]>> wrote:
On Tue, 23 May 2023 at 05:31, Stefano Zampini
<[email protected] <mailto:[email protected]>> wrote:
If I may add to the discussion, it may be that you are going OOM
since you are trying to factorize a 3 million dofs problem, this
problem goes undetected and then fails at a later stage
Thank you for your comment. I ran the problem with 90 processes
distributed across three nodes, each equipped with 500G of memory.
If this amount of memory is sufficient for solving the matrix with
approximately 3 million degrees of freedom?
It really depends on the fill. Suppose that you get 1% fill, then
(3e6)^2 * 0.01 * 8 = 1e12 B
and you have 1.5e12 B, so I could easily see running out of memory.
Thanks,
Matt
Thanks!
Zongze
Il giorno lun 22 mag 2023 alle ore 20:03 Zongze Yang
<[email protected] <mailto:[email protected]>> ha scritto:
Thanks!
Zongze
Matthew Knepley <[email protected]
<mailto:[email protected]>>于2023年5月23日 周二00:09写道：
On Mon, May 22, 2023 at 11:07 AM Zongze Yang
<[email protected] <mailto:[email protected]>> wrote:
Hi,
I hope this letter finds you well. I am writing to
seek guidance regarding an error I encountered while
solving a matrix using MUMPS on multiple nodes:
Iprobe is buggy on several MPI implementations. PETSc
has an option for shutting it off for this reason.
I do not know how to shut it off inside MUMPS however. I
would mail their mailing list to see.
Thanks,
Matt
```bash
Abort(1681039) on node 60 (rank 60 in comm 240):
Fatal error in PMPI_Iprobe: Other MPI error, error
stack:
PMPI_Iprobe(124)..............:
MPI_Iprobe(src=MPI_ANY_SOURCE, tag=MPI_ANY_TAG,
comm=0xc4000026, flag=0x7ffc130f9c4c,
status=0x7ffc130f9e80) failed
MPID_Iprobe(240)..............:
MPIDI_iprobe_safe(108)........:
MPIDI_iprobe_unsafe(35).......:
MPIDI_OFI_do_iprobe(69).......:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
Assertion failed in file
src/mpid/ch4/netmod/ofi/ofi_events.c at line 125: 0
```
The matrix in question has a degree of freedom (dof)
of 3.86e+06. Interestingly, when solving
smaller-scale problems, everything functions
perfectly without any issues. However, when
attempting to solve the larger matrix on multiple
nodes, I encounter the aforementioned error.
The complete error message I received is as follows:
```bash
Abort(1681039) on node 60 (rank 60 in comm 240):
Fatal error in PMPI_Iprobe: Other MPI error, error
stack:
PMPI_Iprobe(124)..............:
MPI_Iprobe(src=MPI_ANY_SOURCE, tag=MPI_ANY_TAG,
comm=0xc4000026, flag=0x7ffc130f9c4c,
status=0x7ffc130f9e80) failed
MPID_Iprobe(240)..............:
MPIDI_iprobe_safe(108)........:
MPIDI_iprobe_unsafe(35).......:
MPIDI_OFI_do_iprobe(69).......:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
Assertion failed in file
src/mpid/ch4/netmod/ofi/ofi_events.c at line 125: 0
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(MPL_backtrace_show+0x26)
[0x7f6076063f2c]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x41dc24)
[0x7f6075fc5c24]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x49cc51)
[0x7f6076044c51]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x49f799)
[0x7f6076047799]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x451e18)
[0x7f6075ff9e18]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x452272)
[0x7f6075ffa272]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x2ce836)
[0x7f6075e76836]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x2ce90d)
[0x7f6075e7690d]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x48137b)
[0x7f607602937b]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x44d471)
[0x7f6075ff5471]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(+0x407acd)
[0x7f6075fafacd]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(MPIR_Err_return_comm+0x10a)
[0x7f6075fafbea]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpi.so.12(MPI_Iprobe+0x312)
[0x7f6075ddd542]
/nfs/opt/cascadelake/linux-centos7-cascadelake/gcc-9.4.0/mpich-3.4.2-qgtz76gekvjzuacy7wq5a26rqlewoxfc/lib/libmpifort.so.12(pmpi_iprobe+0x2f)
[0x7f606e08f19f]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(__zmumps_load_MOD_zmumps_load_recv_msgs+0x142)
[0x7f60737b194d]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_try_recvtreat_+0x34)
[0x7f60738ab735]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(__zmumps_fac_par_m_MOD_zmumps_fac_par+0x991)
[0x7f607378bcc8]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_fac_par_i_+0x240)
[0x7f6073881d36]
Abort(805938831) on node 51 (rank 51 in comm 240):
Fatal error in PMPI_Iprobe: Other MPI error, error
stack:
PMPI_Iprobe(124)..............:
MPI_Iprobe(src=MPI_ANY_SOURCE, tag=MPI_ANY_TAG,
comm=0xc4000017, flag=0x7ffe20e1402c,
status=0x7ffe20e14260) failed
MPID_Iprobe(244)..............:
progress_test(100)............:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_fac_b_+0x1463)
[0x7f60738831a1]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_fac_driver_+0x6969)
[0x7f60738446c9]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_+0x2d83)
[0x7f60738bf9cf]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_f77_+0x178c)
[0x7f60738c33bc]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/mumps-5.5.1-gb7wlwxwbalf5rw5vkp6gtkhfkdqpntz/lib/libzmumps.so(zmumps_c+0x8f8)
[0x7f60738baacb]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(+0x894560)
[0x7f6077297560]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(MatLUFactorNumeric+0x32e)
[0x7f60773bb1e6]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(+0xf51665)
[0x7f6077954665]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(PCSetUp+0x64b)
[0x7f60779c77e0]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(KSPSetUp+0xfb6)
[0x7f6077ac2d53]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(+0x10c1c28)
[0x7f6077ac4c28]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(KSPSolve+0x13)
[0x7f6077ac8070]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(+0x11249df)
[0x7f6077b279df]
/nfs/home/zzyang/opt/software/linux-centos7-cascadelake/gcc-9.4.0/petsc-develop-5wrc3y6lyelr3iyrlm3sr2jlh2wxif3k/lib/libpetsc.so.3.019(SNESSolve+0x10df)
[0x7f6077b676c6]
Abort(1) on node 60: Internal error
Abort(1007265423) on node 65 (rank 65 in comm 240):
Fatal error in PMPI_Iprobe: Other MPI error, error
stack:
PMPI_Iprobe(124)..............:
MPI_Iprobe(src=MPI_ANY_SOURCE, tag=MPI_ANY_TAG,
comm=0xc4000017, flag=0x7fff4d82827c,
status=0x7fff4d8284b0) failed
MPID_Iprobe(244)..............:
progress_test(100)............:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
Abort(941205135) on node 32 (rank 32 in comm 240):
Fatal error in PMPI_Iprobe: Other MPI error, error
stack:
PMPI_Iprobe(124)..............:
MPI_Iprobe(src=MPI_ANY_SOURCE, tag=MPI_ANY_TAG,
comm=0xc4000017, flag=0x7fff715ba3fc,
status=0x7fff715ba630) failed
MPID_Iprobe(240)..............:
MPIDI_iprobe_safe(108)........:
MPIDI_iprobe_unsafe(35).......:
MPIDI_OFI_do_iprobe(69).......:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
Abort(470941839) on node 75 (rank 75 in comm 0):
Fatal error in PMPI_Test: Other MPI error, error stack:
PMPI_Test(188)................:
MPI_Test(request=0x7efe31e03014,
flag=0x7ffea65d673c, status=0x7ffea65d6760) failed
MPIR_Test(73).................:
MPIR_Test_state(33)...........:
progress_test(100)............:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
Abort(805946511) on node 31 (rank 31 in comm 256):
Fatal error in PMPI_Probe: Other MPI error, error stack:
PMPI_Probe(118)...............:
MPI_Probe(src=MPI_ANY_SOURCE, tag=7,
comm=0xc4000015, status=0x7fff9538b7a0) failed
MPID_Probe(159)...............:
progress_test(100)............:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
Abort(1179791) on node 73 (rank 73 in comm 0): Fatal
error in PMPI_Test: Other MPI error, error stack:
PMPI_Test(188)................:
MPI_Test(request=0x5b638d4, flag=0x7ffd755119cc,
status=0x7ffd755121b0) failed
MPIR_Test(73).................:
MPIR_Test_state(33)...........:
progress_test(100)............:
MPIDI_OFI_handle_cq_error(949): OFI poll failed
(ofi_events.c:951:MPIDI_OFI_handle_cq_error:Input/output
error)
```
Thank you very much for your time and consideration.
Best wishes,
Zongze
--
What most experimenters take for granted before they
begin their experiments is infinitely more interesting
than any results to which their experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/
<http://www.cse.buffalo.edu/~knepley/>
--
Best wishes,
Zongze
--
Stefano
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
their experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
